21656665

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{503}}^1$

素因数の和:696

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 4954535

約数列:

[1, 5, 79, 109, 395, 503, 545, 2515, 8611, 39737, 43055, 54827, 198685, 274135, 4331333, 21656665]

約数ペア:

[(1, 21656665), (5, 4331333), (79, 274135), (109, 198685), (395, 54827), (503, 43055), (545, 39737), (2515, 8611)]